Liquid-fuel burner.



' J. A. MITCHELL.

LIQUID FUEL BURNER! AIPLIUATION FILED PBB.11, 1910. v I 963,6 1 7Patented July 5, 1910.

2 BHEETS-BHEET 1.

J- A. MITCHELL LIQUID FUEL BURNER.

APPLICATION FILED FEB. 11, 1910.

Patented July 5, 1910.

Z SHEETS-SHEET Z.

JOHN ALEXANDER MITCHELL, 0F TULSA, OKLAHOMA.

LIQUID-FUEL BURNER.

Specification of Letters Patent.

Patented July 5, 1910.

Application filed February 11, 1910. Serial N 0. 543,270.

To all whom it may concern.

Be it known that I, JOHN A. MITCHELL, a citizen of the United States,residing at Tulsa, in the county of Tulsa and State of Oklahoma, haveinvented a new and useful Liquid-Fuel Burner, of which the following isa specification.

This invention has for its object to provide an improved burner forutilizing crude oils, a combustible vapor being formed by dischargingthe oil into a hot pan or tray. Steam is also generated by dischargingwater into the pan with the oil, whereby a combustible mixture isproduced which makes a hot fire, and consumes all solid matters andimpurities present in the oil.

Another object of the invention is to provide an improved burnerstructure which is simple, and all the parts of which are so assembledthat they are readily accessible for cleaning, and other purposes.

The invention also has for its object to provide improved means forfeeding air to the burner, an abundant supply of a1r being assured.

With the herein stated objects in view, the invention consists in anovel construction and arrangement of parts to be hereinafter describedand claimed, reference being had to the accompanying drawings forming apart of this specification, in which Figure 1 is a perspective viewshowing the application of the invention, the burner being shown inposition within the fire pot of a stove, and the latter being partlybroken away. Fig. 2 is an elevation of the burner removed from thestove, parts being broken away. Fig. 8 is a longitudinal section of theburner; and Fig. 4 is a transverse section of the burner on the line4:-4: of Fig. 3.

The burner is so constructed that it may be mounted in the fire pot ofany ordinary stove, it being supported on the grate. The drawing showsan ordinary cooking stove 5, to which the burner is shown applied. Theburner comprises a casing in which is mounted a shallow open pan or tray6 into which the oil and water drops. The burner casing is rectangularin form, and consists of front and rear walls 7 and 8 respectively, andend walls 9. To the top of the casing is fitted a removable lid or cover10 formed with an opening 11 through which the fuel pipe passes so as todischarge into the pan.

The bottom portion of the burner casing is reduced, in which reducedportion the pan 6 is mounted said an being provided with legs 12 wherebyit 1s held spaced a suitable distance above the bottom 13 of the casing.

In the front and rear walls of the reduced portion of the casing, areair inlet openings 14. These openings are so located with respect to thepan 6, that the air is carried .across the pan above and beneath thesame,

the size of the openings being such that the upper portion of saidopenings extends above the plane of the top portion of the pan, and thelower portion of the openings extends below the plane of the bottom ofthe an. The air openings on one side of the urner casing are setstaggered with respect to the air openings in the other side of thecasing, whereby a series of air currents are caused to travel across thepan alternately in opposite directions.

In the rear wall 8 of the burner casing, at the top thereof, is anopening 15 through which the flames escape, and adjacent to thisopening, the top 10 is also cut away for a short distance as indicatedat 16.

The casing herein described is supported on a stand comprising an openrectangular frame consisting of side walls 17 and end walls 18, the sidewalls being spaced from the front and rear walls of the reduced lowerportion of the casing in which the air openings 1e are located. Thisframe is mounted at its ends on feet 19, whereby the entire structure issupported on the grate of the stove, the legs 19 extending a shortdistance below the plane of the bottom of the burner casing, so as tospace said casing a short distance above the grate. Air passing throughthe grate bars flows into the space between the walls 17 and the lowerportion of the front and rear walls of the burner casing, and enterssaid casing through the openings 14:.

The oil supply pipe 20 enters the fire pot of the stove through anopening made in the wall of the stove, and is connected to a supply tankor reservoir 21, suitably elevated to give a gravity feed. To the oilpipe 20 is also connected a pipe 22 leading to a water tank 28. The oiland water pipes will be equipped with valves, and other necessaryfixtures.

In operation, the valves of the oil and water pipes will be adjusted todeliver one part of water to two parts of oil. The burner is started byrunning a small quan- 7 "issuing from the burner through the open tityof oil into the pan 6, and then igniting the same. When the pan becomeshot, the oil and water is turned thereinto in the proportions stated.The -oil and water dropping into' the hot pan, are at once vaporized,a"ndacombustible mixture is pro duced which makes a hot fire, the flames'ings l: and 16. The steam or Water vapor promotes combustion of thevaporized oil,

7 and causes all'solid matters and impurities present in the oil to beconsumed. An abundant supply of air to support combustion is provided,the air flowing horizontally across the lower part ofthe burner casingabove H and below the pan,-and alternately in op ositedirections,.-thereb.y obtaining a per eat mixture of air and vapor, thevapor being taken up by the oppositely flowing. air currents, and mixedtherewith. Inasmuch as rthe pan is spaced from the bottom of the I,casing, the flames'can .pass under the pan,

whereby it is quickly heated, and kept hot during the operation of theburner.

The pan is removable from the burner casing so that it can be readilycleaned.

I The other parts of the burner are also readily accessible, the burnercasing being removably mounted in; the supporting frame, and thevlid 10'being removable from the casing. A o

A burner constructed as herein described I can be readily applied to anyordinary stove 'fwithout modifying the structure thereof, and-1t;isefliclent in; operation, a large hot firebeing produced. v 1

What is claimed is 1". In a liquid fuel burner, a casing havtions acrossthe pan above an same.

ing an outlet, a pan mounted therein, means for discharging fuelinto thepan,and means for feeding air alternately in op osite direcbelow the 2.In a liquid fuel burner, a casing having:

an outlet for the products of combustion, and air inlets on oppositesides, a pan in the casing, means-for dischar ing fuel" into the pan,and a supporting frame for the casing, said frame being spaced from thatportionof the casing having the air vinlet openings.

3. In a liquid fuel burner, acasingf hav- C. W. MOCARTY,

MARK E. CARR.

